This monument was designated pursuant to the Antiquities Act of 1906, which pertains to Federal lands only and enhances protection of those lands within the boundaries of the monument, which in all cases are limited to the smallest area compatible with the proper care and management of the resources to be protected.

In determining the appropriate boundaries, factors such as extensive infrastructure, existing encumbrances, land ownership, and anticipated management access needs were considered in order to afford the best opportunity for successful and effective monument and forest management.

All areas and resources within the Angels and San Bernardino National Forests, including areas not within the monument boundary, will continue to be managed in accordance with the Forest Service’s mission to protect the health, diversity, and productivity of the nation’s forests and grasslands to meet the needs of present and future generations.

For more information on specifics related to the map and its boundaries, please contact Sherry Rollman, Angeles National Forest, at (626) 574-5205.

The new National Monument will allow hiking, fishing, mountain biking, camping, hunting and other established recreational activities such as four-wheel driving on designated roads, and will not create new water rights or affect existing water rights. The designation will only apply to federal lands and will not impact private, state, or local property within the boundaries of or adjacent to a national monument.In June 2014, Representative Chu authored HR 4858, the San Gabriel National Recreation Area Act, which is sitting in the House Subcommittee on Public Lands and Environmental Regulation. This monument designation includes almost half of the area proposed under the legislation. The map below depicts the area of the new National Monument.